oj.uz

Submission #796707

# Submission time Handle Problem Language Result Execution time Memory
796707 2023-07-28T15:55:12 Z SlavicG Minerals (JOI19_minerals) C++17
90 / 100
 64 ms 5704 KB 
#include <bits/stdc++.h>
#include "minerals.h"
using namespace std;
 
#define sz(a) (int)a.size()
mt19937 rng(69);
//b - valoarea elementului, stateul (aprins/stins)
int ans = 0, prevans = -1;
const int N = 1e5 + 69;
int in[N], added[N];

void rec(vector<int> a, vector<pair<int, int>> b) {
    if(b.empty() || a.empty()) return;
    if(sz(b) == 1) {
        for(auto x: a) Answer(x, b[0].first);
        return;
    }
    int mid = (rng() % 2 ? sz(b) / 2 : min(sz(b) - 1, sz(b) / 2 + (int)rng() % 13));
    vector<pair<int, int>> left, right;
    for(int i = 0; i < sz(b); ++i) {
        if(i < mid) left.push_back(b[i]);
        else right.push_back(b[i]);
    }

    vector<int> first_half, second_half;
    for(auto& x: a) {
        if(added[x]) continue;
        if(in[x] <= mid) {
            first_half.push_back(x);
            x = -1;
        }
        else added[x] = 1;
    }

    {
        int change1 = 0, change2 = 0;
        for(auto& x: left) {
            if(!x.second) {
                ++change1;
            } else {
                ++change2;
            }
        }
        for(auto& x: right) {
            if(x.second) {
                ++change1;
            } else {
                ++change2;
            }
        }
        if(change2 < change1) swap(left, right), swap(first_half, second_half);
    }
 
    for(auto& x: left) {
        if(!x.second) {
            prevans = Query(x.first);
            x.second = 1;
        }
    }
    for(auto& x: right) {
        if(x.second) {
            prevans = Query(x.first);
            x.second = 0;
        }
    }
 
    shuffle(a.begin(), a.end(), rng);
    for(auto x: a) {
        if(x == -1) continue;
        if(sz(second_half) >= sz(right)) {
            first_half.push_back(x);
            continue;
        }
        if(sz(first_half) >= sz(left)) {
            second_half.push_back(x);
            continue;
        }
        int ans = Query(x);
        if(ans == prevans) {
            first_half.push_back(x);
        } else {
            second_half.push_back(x);
        }
        prevans = ans;
    }
    rec(second_half, right);
    rec(first_half, left);
}
 
void Solve(int n) {
    for(int i = 0; i < N; ++i) in[i] = INT_MAX;
    vector<int> p1, p2;
    vector<int> bulanea(2 * n);
    iota(bulanea.begin(), bulanea.end(), 1);
    shuffle(bulanea.begin(), bulanea.end(), rng);
    for(int i: bulanea) {
        ans = Query(i);
        if(ans == prevans) {
            p2.push_back(i);
            in[i] = ans;
        } else {
            p1.push_back(i);
        }
        prevans = ans;
        if(sz(p1) == n) {
            for(int j = 0; j < sz(bulanea); ++j) {
                if(bulanea[j] == i) {
                    for(int f = j + 1; f < sz(bulanea); ++f) {
                        p2.push_back(bulanea[f]);
                    }
                    break;
                }
            }
            break;
        }
    }
    assert(sz(p1) == n && sz(p2) == n);
    vector<pair<int, int>> b;
    for(auto x: p1) b.push_back({x, 1});
    rec(p2, b);
}
/*
4
1 5
2 6
3 4
7 8
*/
// g++ -Wall -lm -static -DEVAL -o minerals -O2 minerals.cpp grader.cpp -std=c++17

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 0 ms 720 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 3 ms 848 KB Output is correct
3 Correct 5 ms 1104 KB Output is correct
4 Correct 10 ms 1592 KB Output is correct
5 Correct 20 ms 2384 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 0 ms 720 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 1 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 10 ms 1592 KB Output is correct
9 Correct 20 ms 2384 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 12 ms 1872 KB Output is correct
12 Correct 18 ms 2384 KB Output is correct
13 Correct 18 ms 2428 KB Output is correct
14 Correct 18 ms 2304 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 0 ms 720 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 1 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 10 ms 1592 KB Output is correct
9 Correct 20 ms 2384 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 12 ms 1872 KB Output is correct
12 Correct 18 ms 2384 KB Output is correct
13 Correct 18 ms 2428 KB Output is correct
14 Correct 18 ms 2304 KB Output is correct
15 Correct 50 ms 5264 KB Output is correct
16 Correct 50 ms 5240 KB Output is correct
17 Correct 49 ms 5224 KB Output is correct
18 Correct 52 ms 5244 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 0 ms 720 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 1 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 10 ms 1592 KB Output is correct
9 Correct 20 ms 2384 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 12 ms 1872 KB Output is correct
12 Correct 18 ms 2384 KB Output is correct
13 Correct 18 ms 2428 KB Output is correct
14 Correct 18 ms 2304 KB Output is correct
15 Correct 50 ms 5264 KB Output is correct
16 Correct 50 ms 5240 KB Output is correct
17 Correct 49 ms 5224 KB Output is correct
18 Correct 52 ms 5244 KB Output is correct
19 Correct 51 ms 5300 KB Output is correct
20 Correct 51 ms 5372 KB Output is correct
21 Correct 52 ms 5292 KB Output is correct
22 Correct 54 ms 5204 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 0 ms 720 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 1 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 10 ms 1592 KB Output is correct
9 Correct 20 ms 2384 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 12 ms 1872 KB Output is correct
12 Correct 18 ms 2384 KB Output is correct
13 Correct 18 ms 2428 KB Output is correct
14 Correct 18 ms 2304 KB Output is correct
15 Correct 50 ms 5264 KB Output is correct
16 Correct 50 ms 5240 KB Output is correct
17 Correct 49 ms 5224 KB Output is correct
18 Correct 52 ms 5244 KB Output is correct
19 Correct 51 ms 5300 KB Output is correct
20 Correct 51 ms 5372 KB Output is correct
21 Correct 52 ms 5292 KB Output is correct
22 Correct 54 ms 5204 KB Output is correct
23 Correct 53 ms 5416 KB Output is correct
24 Correct 52 ms 5448 KB Output is correct
25 Correct 57 ms 5504 KB Output is correct
26 Correct 56 ms 5280 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 0 ms 720 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 1 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 10 ms 1592 KB Output is correct
9 Correct 20 ms 2384 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 12 ms 1872 KB Output is correct
12 Correct 18 ms 2384 KB Output is correct
13 Correct 18 ms 2428 KB Output is correct
14 Correct 18 ms 2304 KB Output is correct
15 Correct 50 ms 5264 KB Output is correct
16 Correct 50 ms 5240 KB Output is correct
17 Correct 49 ms 5224 KB Output is correct
18 Correct 52 ms 5244 KB Output is correct
19 Correct 51 ms 5300 KB Output is correct
20 Correct 51 ms 5372 KB Output is correct
21 Correct 52 ms 5292 KB Output is correct
22 Correct 54 ms 5204 KB Output is correct
23 Correct 53 ms 5416 KB Output is correct
24 Correct 52 ms 5448 KB Output is correct
25 Correct 57 ms 5504 KB Output is correct
26 Correct 56 ms 5280 KB Output is correct
27 Correct 59 ms 5496 KB Output is correct
28 Correct 54 ms 5556 KB Output is correct
29 Correct 53 ms 5564 KB Output is correct
30 Correct 58 ms 5400 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 0 ms 720 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 1 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 10 ms 1592 KB Output is correct
9 Correct 20 ms 2384 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 12 ms 1872 KB Output is correct
12 Correct 18 ms 2384 KB Output is correct
13 Correct 18 ms 2428 KB Output is correct
14 Correct 18 ms 2304 KB Output is correct
15 Correct 50 ms 5264 KB Output is correct
16 Correct 50 ms 5240 KB Output is correct
17 Correct 49 ms 5224 KB Output is correct
18 Correct 52 ms 5244 KB Output is correct
19 Correct 51 ms 5300 KB Output is correct
20 Correct 51 ms 5372 KB Output is correct
21 Correct 52 ms 5292 KB Output is correct
22 Correct 54 ms 5204 KB Output is correct
23 Correct 53 ms 5416 KB Output is correct
24 Correct 52 ms 5448 KB Output is correct
25 Correct 57 ms 5504 KB Output is correct
26 Correct 56 ms 5280 KB Output is correct
27 Correct 59 ms 5496 KB Output is correct
28 Correct 54 ms 5556 KB Output is correct
29 Correct 53 ms 5564 KB Output is correct
30 Correct 58 ms 5400 KB Output is correct
31 Correct 55 ms 5576 KB Output is correct
32 Correct 55 ms 5628 KB Output is correct
33 Correct 64 ms 5660 KB Output is correct
34 Correct 60 ms 5508 KB Output is correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 0 ms 720 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 1 ms 720 KB Output is correct
6 Correct 3 ms 848 KB Output is correct
7 Correct 5 ms 1104 KB Output is correct
8 Correct 10 ms 1592 KB Output is correct
9 Correct 20 ms 2384 KB Output is correct
10 Correct 2 ms 720 KB Output is correct
11 Correct 12 ms 1872 KB Output is correct
12 Correct 18 ms 2384 KB Output is correct
13 Correct 18 ms 2428 KB Output is correct
14 Correct 18 ms 2304 KB Output is correct
15 Correct 50 ms 5264 KB Output is correct
16 Correct 50 ms 5240 KB Output is correct
17 Correct 49 ms 5224 KB Output is correct
18 Correct 52 ms 5244 KB Output is correct
19 Correct 51 ms 5300 KB Output is correct
20 Correct 51 ms 5372 KB Output is correct
21 Correct 52 ms 5292 KB Output is correct
22 Correct 54 ms 5204 KB Output is correct
23 Correct 53 ms 5416 KB Output is correct
24 Correct 52 ms 5448 KB Output is correct
25 Correct 57 ms 5504 KB Output is correct
26 Correct 56 ms 5280 KB Output is correct
27 Correct 59 ms 5496 KB Output is correct
28 Correct 54 ms 5556 KB Output is correct
29 Correct 53 ms 5564 KB Output is correct
30 Correct 58 ms 5400 KB Output is correct
31 Correct 55 ms 5576 KB Output is correct
32 Correct 55 ms 5628 KB Output is correct
33 Correct 64 ms 5660 KB Output is correct
34 Correct 60 ms 5508 KB Output is correct
35 Incorrect 56 ms 5704 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -